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Free Online Tools

103+ free, browser-based utilities — no uploads, no sign-up, no cost.

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PDF Tools

23 tools

CSV to PDF

Drop a CSV and get a beautifully formatted PDF table in seconds.

PDF Merge

Combine multiple PDFs into one file. Drag to reorder pages.

PDF Compress

Shrink any PDF's file size with three quality presets.

PDF Split

Extract pages or split a PDF into smaller files instantly.

PDF Rotate

Rotate all or selected pages of a PDF to any angle.

PDF to JPG

Convert each PDF page into a high-quality JPG image.

Image to PDF

Turn JPG, PNG, and WebP images into a single PDF.

Excel to PDF

Convert Excel spreadsheets to well-formatted PDF documents.

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Lock PDF

Add password protection to any PDF with AES encryption.

Unlock PDF

Remove password protection from PDFs you own.

PDF to Markdown

Extract a text-based PDF into clean Markdown — auto-detects headings, lists and bold.

PDF Text Editor

Click to place text anywhere on a PDF page. Change font, size, color — then download.

PDF Signature

Draw, type, or upload your signature and place it anywhere on a PDF.

PDF Compare

Upload two PDFs and see exactly what changed — added and removed text highlighted side by side.

PDF Watermark

Stamp text or an image onto every page. Set position, opacity, rotation, and page range.

PDF to PPT

Convert each PDF page into a PowerPoint slide image — visually identical to the original.

PPT to PDF

Convert a PowerPoint PPTX to PDF. Slide text is extracted and rendered one page per slide.

PDF to Word

Extract all text from a PDF into an editable DOCX file ready for Word or Google Docs.

Word to PDF

Convert a DOCX document to a clean, printable PDF with headings and paragraphs preserved.

Redact PDF

Draw over sensitive content or search text to mark it. Apply permanent black redactions and download.

PDF Page Numbers

Stamp page numbers onto every page. Choose position, format, font size, color, and starting number.

Repair PDF

Fix corrupted or damaged PDFs. Quick structural repair or full page-by-page rebuild for severely damaged files.

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PDF OCR

Extract text from scanned PDFs using Tesseract.js. Output a searchable PDF or plain text file. Supports 8 languages.

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Text & List Tools

11 tools

Word Counter

Count words, characters, sentences, reading time and keyword density live.

Case Converter

Switch text between 12 cases: UPPER, lower, camelCase, snake_case and more.

Lorem Ipsum Generator

Generate placeholder text by words, sentences or paragraphs. Copy HTML too.

Duplicate Line Remover

Remove duplicate lines with case-insensitive matching and whitespace trimming.

Text Reverser

Reverse text by characters, words, lines or reverse each word individually.

Whitespace Cleaner

Remove extra spaces, blank lines, tabs and trailing whitespace from text.

Sort Lines

Sort lines A→Z, by length, numerically or shuffle randomly. Remove dupes too.

Text to Binary

Convert text to binary, hex, octal or decimal with custom separators.

Binary to Text

Decode binary, hex, octal or decimal codes back to readable text.

AI Content Detector

Transparent, signal-by-signal estimate of how AI-generated a text looks. Heuristic — not proof.

Fancy Text Generator

Turn text into 30+ Unicode font styles — 𝓫𝓸𝓵𝓭, 𝕕𝕠𝕦𝕓𝕝𝕖, strikethrough, upside down — for social bios.

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Image Tools

8 tools

Image Compressor

Compress JPG, PNG and WebP images without visible quality loss.

Image Resizer

Resize images to exact pixel dimensions, percentage or common presets.

Image Crop

Crop images with drag-to-select and preset aspect ratios.

PNG to JPG

Convert PNG files to JPG with adjustable quality and background color.

JPG to PNG

Convert JPG images to lossless PNG format. Batch supported.

Image to Base64

Encode any image as a Base64 data URL for embedding in HTML/CSS.

Favicon Generator

Generate favicons in all sizes (16×16 to 512×512) from one image.

Image Pixelator

Add a Minecraft / 8-bit pixelate effect to the whole image or a rectangular region.

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SEO & Web Tools

7 tools

Keyword Density Checker

Analyze keyword frequency and density in any text. Catch over-optimization before publishing.

Long Tail Keyword Generator

Generate hundreds of long tail keyword ideas from any seed keyword — questions, buyers, modifiers and more.

Keyword Extractor

Extract the most important keywords and phrases from any text with frequency analysis and tag cloud.

Keyword Combiner

Combine multiple keyword lists (A × B × C) for PPC ad groups. Supports all match types.

SERP Preview

Preview how your title and meta description look in Google results. Check pixel widths live.

Meta Tags Generator

Generate complete SEO meta tags — basic, Open Graph and Twitter Cards — with live HTML output.

Meta Tags Analyzer

Paste any HTML to analyze all meta tags and get instant SEO recommendations and a score.

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Developer Tools

19 tools

JSON Formatter

Pretty-print, validate and minify JSON with syntax highlighting.

Base64 Encode / Decode

Encode strings or files to Base64 or decode Base64 back to text.

URL Encode / Decode

Percent-encode URLs or decode percent-encoded strings.

HTML Encode / Decode

Escape HTML entities or unescape them back to characters.

Regex Tester

Test regular expressions live with match highlighting and capture groups.

Password Generator

Generate strong random passwords with strength meter and passphrase mode.

Hash Generator

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text or files.

Color Converter

Convert between HEX, RGB, HSL, HSV, CMYK with palette generator.

CSS Minifier

Minify CSS to reduce file size or beautify compressed CSS.

Binary Right Shifter

Logical or arithmetic right shift on binary numbers — unlimited, self-length or truncated.

Hex to Binary

Convert hexadecimal to binary with optional 0b prefix, byte padding and group spacing.

QR Code Generator

Create QR codes for URLs, Wi-Fi, email and text. Custom colors and size, PNG/SVG download.

QR Code Reader

Decode a QR code from an image or your camera. URLs, Wi-Fi, contacts and text.

Unix Timestamp Converter

Convert epoch seconds / milliseconds to a human date and back. Live current timestamp.

UUID Generator

Bulk-generate cryptographically random v4 UUIDs with uppercase, no-dash and brace options.

Diff Checker

Compare two texts side by side with added / removed lines highlighted. Ignore case & whitespace.

JWT Decoder

Decode a JSON Web Token header and payload, with readable expiry / issued-at. Decoding only.

JSON ↔ CSV ↔ YAML

Convert structured data between JSON, CSV and YAML in any direction, instantly.

Code Formatter & Minifier

Beautify or minify JSON, JavaScript, CSS, HTML, XML and SQL right in your browser.

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Calculators

15 tools

Age Calculator

Calculate exact age in years, months, days, hours and minutes from a birth date.

BMI Calculator

Calculate Body Mass Index with metric or imperial units and see your category.

Percentage Calculator

Six ways to calculate percentages, increases, decreases and differences.

Unit Converter

Convert length, weight, temperature, area, volume, speed, time and data.

Read Time Estimator

Paste any text and instantly see reading time, speaking time and readability.

Number Base Converter

Convert between binary, octal, decimal, hexadecimal and any custom base.

Hours to Days

Convert hours to days with configurable decimal precision and optional "days" suffix.

Time to Military Time

12-hour or 24-hour clock to military format with optional seconds, colons and "hours" suffix.

Loan / EMI Calculator

Monthly instalment, total interest and a yearly amortization table for any loan.

Mortgage Calculator

Full monthly payment — principal & interest plus tax, insurance and HOA.

Tip Calculator

Calculate the tip and split the bill between any number of people, with rounding.

Discount Calculator

Sale price and savings from a percentage discount, including a stacked second discount.

VAT / Sales Tax Calculator

Add or remove VAT / GST / sales tax at any rate. See net, tax and gross.

Date Difference Calculator

Exact years / months / days between two dates, plus total days, weeks and weekdays.

Countdown Timer

Live countdown of days, hours, minutes and seconds to any date — deadlines, launches, new year.

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Random Tools

7 tools

Random Date Generator

Generate any number of random dates in any format (ISO 8601, YYYY-MM-DD, year only…) within a chosen range.

Random Item Picker

Pick N items at random from any list. Allow or disallow duplicates, custom delimiters in and out.

Spin the Wheel

A customizable random wheel picker — add entries, spin, and let the wheel decide. Names, prizes, yes/no.

Dice Roller

Roll any dice — D4 to D100 or custom — with modifier and roll history. Cryptographically random.

Coin Flip

Heads or tails — flip one coin or many at once with a running tally. Fair and random.

Random Number Generator

Random integers or decimals in any range, in bulk, with optional uniqueness and sorting.

Random Name Generator

Generate full names, first/last names or catchy usernames in bulk for test data and sign-ups.

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Shipping Label Tools

5 tools

Shipping Label Resizer

Resize any carrier label (UPS, USPS, FedEx, DHL) from 8.5×11 / A4 to 4×6 thermal, A6 or custom size.

UPS Label Resizer

Convert UPS WorldShip / ups.com 8.5×11 PDFs to 4×6 thermal labels. Auto-crops the top-left label region.

USPS Label Resizer

Click-N-Ship, Stamps.com, Pirate Ship → 4×6 thermal. Crop top-half, scale to A6, half-page, or custom.

FedEx Label Resizer

FedEx Ship Manager and fedex.com PDFs to 4×6 thermal. Preserves PDF417 / MaxiCode barcodes.

DHL Label Resizer

MyDHL+, DHL Express, DHL eCommerce A4 PDFs → 4×6 thermal, A6 or any custom size.

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Emoji Copy & Paste

9 categories

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Smileys & People

Faces, emotions, hands, body parts, people, occupations and clothing emojis.

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Animals & Nature

Animals, insects, plants, weather, moon, stars and nature symbols.

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Food & Drink

Fruits, vegetables, meals, desserts, drinks and kitchen utensils.

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Activity

Sports, games, music instruments, hobbies and medals.

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Travel & Places

Vehicles, buildings, landmarks, space and travel symbols.

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Objects

Technology, tools, books, money, medical and household items.

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Symbols

Hearts, arrows, clocks, zodiac, religious symbols and geometric shapes.

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Flag Emojis

All 260+ country and regional flag emojis. Copy any flag instantly.

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Heart Emojis

All heart colors, love symbols, broken hearts and romance emojis.

What is Butter Tools?

Butter Tools is a free collection of 103+ browser-based online tools designed to help you get everyday tasks done fast — without installing software, creating an account, or uploading files to a server. Every tool runs entirely in your browser using JavaScript, meaning your data stays private and never leaves your device. From merging PDFs and compressing images to generating passwords and checking keyword density, Butter Tools covers the utilities that professionals, students, developers, and writers use every day.

Why Use Butter Tools?

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No Sign-Up Required

All tools are free to use instantly — no account, no email, no subscription needed.

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100% Private & Secure

Files and text never leave your device. All processing happens entirely in your browser.

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Instant Results

No waiting for server uploads. Results are generated in milliseconds, directly in your browser.

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Works on Any Device

Fully responsive design — use Butter Tools on desktop, tablet, or mobile phone.

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Completely Free

No hidden fees, no watermarks, no usage limits. Every tool is 100% free, always.

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Regularly Updated

New tools are added regularly. Bookmark this page to always have the latest utilities at hand.

Tools for Every Task

PDF Tools

Merge, compress, split, rotate, and convert PDF files directly in your browser — no Adobe Acrobat needed. Popular tools include PDF Merge, PDF Compress, PDF to Word, PDF to JPG, PDF OCR, and PDF Signature.

Text & Writing Tools

Essential utilities for writers, editors, and developers. Use the Word Counter, Case Converter, Lorem Ipsum Generator, Duplicate Line Remover, AI Content Detector, and more.

Image Tools

Compress, resize, crop, and convert images online without any upload. Convert PNG to JPG, JPG to PNG, generate favicons, create Base64 image strings, or add a pixel art effect with the Image Pixelator.

Developer Tools

Speed up your workflow with the JSON Formatter, Base64 Encoder, Regex Tester, Password Generator, UUID Generator, JWT Decoder, Diff Checker, and more.

Calculators

From personal finance to everyday math — use the Loan Calculator, Mortgage Calculator, Age Calculator, BMI Calculator, Percentage Calculator, Unit Converter, and many more.

SEO & Web Tools

Optimize your content with the Keyword Density Checker, Long-Tail Keyword Generator, SERP Preview, Meta Tags Generator, and Meta Tags Analyzer.

Frequently Asked Questions

Are all Butter Tools really free?

Yes, completely. There are no paid plans, subscriptions, or hidden fees. Every tool on Butter Tools is free to use as many times as you like.

Do I need to create an account?

No. None of our tools require sign-up or login. Just open the tool and start using it immediately.

Are my files and data safe?

Yes. All tools run entirely in your browser using JavaScript. Your files, text, and data are never uploaded to any external server and never leave your device.

Do the tools work on mobile?

Yes. Butter Tools is fully responsive and works on smartphones, tablets, and desktop computers across all modern browsers including Chrome, Firefox, Safari, and Edge.